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【多选题】
以下关于霍尔式转速传感器的说法正确的有A.
输出电压信号近似方波信号
B.
需要外加电源供电
C.
输出电压大小与转速无关
D.
输出电压大小与转速有关
E.
低速特性好，信号处理简单
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举一反三
【单选题】We have opened insurance you ordered for US$ 9,000 ________ the shipment by S.S/East Sun.
A.
in
B.
by
C.
of
D.
on
【简答题】下列选项属于米粉面团特点的是( )。
【简答题】请问什么是CAD,并简述下GIS与CAD的异同?
【单选题】For the goods under S/C No.234, we ______ space on S.S East Wind due to arrive in London around May 3.
A.
have bought
B.
have booked
C.
have hired
D.
have retained
【单选题】For the goods under S/C No.234,we _____ space on S.S East Wind due to arrive in London around May 3.
A.
have booked
B.
have bought
C.
have hired
D.
have retained